| Date | Action |
| 02/04/2012 | License Canceled |
| 12/19/2011 | Renewal Reminder Letter Sent |
| 01/17/2002 | License Renewed |
| 12/17/2001 | Renewal Reminder Letter Sent |
| 08/13/1999 | License Converted |
| 12/18/1996 | License Renewed |
| 08/05/1996 | License Modified |
| 06/06/1995 | Internal Correction Applied |
| 05/31/1995 | Internal Correction Applied |
| 05/31/1995 | License Modified |
| 03/12/1992 | License Modified |
| 02/03/1992 | License Modified |
| 05/08/1991 | License Modified |
| 05/02/1991 | License Modified |
| 03/13/1987 | License Modified |
| 02/25/1987 | License Modified |
| 03/29/1982 | License Issued |